Re: Clarification of behaviour when dropping partitions

On Wed, 2024-12-04 at 23:00 +0100, Bolaji Wahab wrote:
> On Wed, Dec 4, 2024 at 6:20 PM Laurenz Albe <laurenz.albe@cybertec.at> wrote:
> > On Wed, 2024-12-04 at 14:22 +0100, Bolaji Wahab wrote:
> > > I have these two partitioned tables, with referential integrity. The tables
> > > are structured in such a way that we have 1 to 1 mapping between their
> > > partitions. This is achieved with a foreign key.
> >
> > I recommend that you don't create the foreign key constraint between the
> > partitioned tables, but between the individual partitions.
> >
> > That will make detaching and dropping partitions easier, and you will have
> > the same integrity guarantees.
>
> Yes, this is what I have done.
> But the whole point of declaring the foreign key constraint on the partitioned
> table is to have it automatically created on subsequent/future partitions.

Sure, but then you have to accept the disadvantage that it becomes more
difficult to detach partitions.  I think it is less pain to create the
constraint on the partition level.

Yours,
Laurenz Albe